Reply To: Amex Launches New “Centurion” Lounge Network

In the days before 9/11 security and passport control wasn’t a problem, so being in a land-side lounge say Diners Club (long since closed) at LHR between T2 & T3 was useful. Nowadays the lounges are better suited air-side, after security, so one doesn’t have to leave excessive amounts of time for the vagaries of security, plus easier for transiting etc. However that can limit access to a single terminal.